No answer at 24 hour call centre

I have just spent 18 minutes listening to the Vodacom jingle while waiting to get assistance from the Vodacom call centre and my call was not answered! I phoned at 02h00 in the morning! Surely there are not any high call volumes at that time? The website states that the call centre is open 24 hours, but maybe it is manned by one person and that person is fast asleep in front of their computer? Terrible, terrible service!!